Splitting-machine



5 Sheets-Sheet 1.

{No.Model.)

C. S. PIFIE'LD.

SPLITTINGMAGHINB.

PatentedJan. 28, 1890.

q i l n X I h mm', 'hl 1 l! n J l gl' I ii l III I," "L l [I 5 i. I'.

l. v f Re e I WF1-MESSE 1' INVENTU n' av im l u. Perm mwmmmn www c (NoModel.)

5 Sheets-Sheet 2: C.. S. FIFIBLD. SPLITTING MACHINE.

Patented Jan. 28, 1890.

5 Sheets-Sheet 3.

Dm Lw EA F.M I

G FN .U ST .M GDL S n d 0 M o m No. 420,152. Patented'Jan. 28,- 1890.

N. PETERS. PlwwLiUwgr-nphbr. was

(No Model.) 5 Sheets-.sheet 4,

C. S.FIFIELD. SPLITTING MAGHINE. No. 420,152. PatentedJan. 28, 1890.-

(No Model.) 5 sheetssheet v5.

Y C.V S. FIFIELD SPLITTINGVMAGHINB.

No. 420.152, Patented Jan. 28,1890.

NI IWW AIIIINIU UHU! www NiTnD STATES CHARLES S. FIFIELD, OF REVERE,MASSACHUSETTS.

SPLITTING- MACHINE.

SPECIFICATION forming' part of Letters atent No. 420,152, dated January2S, 1890.

Application filed .Tune 28, 1889. I Serial No. 315,915. (No model.)

To all whom it may concern.'

Be it known that I, CHARLES S. FIFIELD, of Revere, in the county ofSuffolk and State of Massachusetts, have invented a new and use4 fulSplitting-Machine, of which the following is a specification, referencebeing had to the accompanying drawings, in Which- Figure 1 is a frontelevation of a machine embodying my invention, the guard being removedfor greater clearness. Fig. 2 is a rear elevation thereof; Fig. 3, anelevation thereof, partly in section,on line 3 3 ofrFig. 1; Fig. 4, anelevation, partly in section, on line 4 4 of Fig. 1. Fig. 5 is asectional view illustrating the feed-rolls,'knife-deiiector, and roll,and leather in process of splitting; Fig. 6, a view, partly in section,on line 6 6 of Fig. 3, showing a spring and parts connected therewith;Fig. 7, a sectional view on line` '7 7 of Fig. 3, showing thefeed-rolls, the hangers, and the slide for adjusting the boxes of one ofthe rolls. Fig. 8 shows a modified form of contrivance for regulatingthe position of the upper roll.

My invention consists, iirst, in the combination of a roll havingperipheral grooves with fingers which work in the grooves; secondly, inthe combination of feed-rolls, a deiiector, and roughened roll whichdirects the split in one direction while the waste passes in anotherdirection, and also increases the draft on the leather; thirdly, in thecombination of the boxes of one of the feed-rolls with a spring to holdthis roll in proper relation t'o the other roll and the knife; and,fourthly, the combination of a pair of feed-rolls and a knife and with ascale and pointer.

In the drawings, in which I show myinvention embodied in the best waynow known to ine, A is the frame, B B the feed-rolls, Dv the knife, andF the deflector. The roll B is mounted in boxes h, mounted in the guidesd, which are inclined from the vertical, as described in my pendingapplication, Serial No. 244,406, filed July 16,1887. The roll B ismounted in boxes b', also mounted in the inclined guides a. The roll Bis formed with` peripheral grooves b2, and iingers b3 are arranged towork in these grooves. Fingers b3 are conveniently mounted on across-bar bt, mounted on the boxes b, `and prevent the leather frompassing around on the roll, as it would be very likely to do when thinand wet. The knife D is mounted uponA an inclined bed-piece ce', as inmy said pending application, and is adjustable thereon. The deiiector Fcauses the split to pass over the roll F', which is a roughened roll,preferably so geared as to have a somewhat greater surface speed thanthe feed-rolls and extending lengthwise of the machine, and is mountedin arms f, preferably pivoted, as shown at f to the frame of themachine. (See Figs. 2 and 4.) Arms f also support the deflector F, andboth deilector and roll F are readily swung on pivot f to enable theworkman to readilyremove the knife. The boxesb, in which the roll B is`mounted, move in the guides c, and are best mounted on balls b5,mounted in adjustable studs h6, supported by the arms t7, mounted on aspring bs, whichis held between its ends in` a rocker-arm b9, mounted inan arm b1@ of frame A, the rockerarm being adjustable by means of ascrew b, working in a slot Z212 in arm b9 to vary the tension of thespring, which, for the best results, should be a square spring, asshown.

Boxes t are formed with inclines bla and supported on springs Z914,which lie between ears 1915 of boxes b and a part of frame A, as inmysaid application. The boxes b are moved against the force of spring614 to allow roll B to approach the roll B by a slide B2, formed withinclines o16, this slide being conveniently provided with a hand-WheelB3, mounted in frame A, whereby the slide is readily moved into anydesired position.

For convenience in adjusting the rolls in a deiinite relation to eachother for splitting leather of a desired thickness, I combine with therolls and knife a gage G, conveniently formed of a scale g on slide B2and a pointer g on frame A, or vice versa. The boxes of the roll B arearrested in their movement toward the boxes of roll Bf by set-screws B4,

mounted in frame A and bearing againstv chamfered corners of the boxesb, as in my pending application. Sliding bar B2 is limited in its upwardmovement by a positive stop, (formed by the cap 1,) and by a set-screw2, against which gib 3, mounted in cap 4, bears, the bar B2 being heldup against the foot of the gib by the tension of springs Z914, pushingbox b against the incline Z916 on bar B2. By this construction I amenabled to make very nice adjustment of the roll B in relation to roll Band the knife-that is, if the rolls are not quite parallel or the upperroll is not in proper relation to the edge of the knife, I adjust theroll by turning the set-screw 2, which is a stop for the gib.

The operation of my machine isas follows: The roll B being adjusted inproper relation to the edge of knife D to give a split of the desiredthickness, (this position will, whatever it may be, of course, beindicated by gage G,) and the spring bf being so adjusted that itstension will keep roll B in proper relation to the edge of knife D andto roll B ,leather X is inserted between the rolls B B', which feed itto the knife D. The split .r strikes against the deflector F and isdirected over the tinted roll F', which strains the split :c away fromthe waste passing between the knife and roll B, and being rotated, asindicated by the arrow in Fig. 5, increases the draft on the split andenables the knife to cut freer.

In Fig. 8 I show cap l, provided with a boss 5 to receive a gib 6 on thebracket, in which the hand-wheel B3 is mounted. A set-screw 7 isprovided as a stop. I intend in a machine provided with thisconstruction to employ a gib and set-screw at the other end of the barB2, as at the left of Fig. '7. By this arrangement greatnicety ofadjustment of the rolls in relation to each other and to the knife maybe obtained, as will be clear from what has been said above.

I do not claim herein the contrivance for arresting the boxes of theroll B, as that contrivance is claimed by me in my said application,Serial No. 244,406.

Vhat I claim as my invention isl. In a splitting-machine, thecombination of roll B, having peripheral grooves b2, with means forconnecting the boxes and arms, substantially as described.

4. The combination of feed-rolls B B and knife D wit-h slide B2 and gageG, slide B2 acting as a stop for the roll B when it moves away from rollB, and the gage G serving t'o indicate the adjustment of the roll Baccording to the position of the slide B2, all substantially as and forthe purpose set forth.

5. In a splitting-machine, the combination of roll B and its boxes bwith arms b?, spring bs, means for connecting thearms and boxes, andmeans for adjusting the tension of spring bs, arms 57 being mount-ed onspring 128, substantially as and for the purpose set forth.

6. In a splitting-machine, the combination of roll B, its boxes b, armsb?, and spring bs, arms 57 being mounted on spring bs, with adL justable studs connecting the arms and boxes,

substantially as and for the purpose set forth.

CHARLES S. FIFIELD.

Vitnesses:

EDWARD S. BEACH, JOHN R. SNOW.

